Raman spectroscopic prediction of the solid fat content of New Zealand anhydrous milk fat
- 8 September 2009
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Analytical Methods
- Vol. 1 (1), 29-38
- https://doi.org/10.1039/b9ay00111e
Abstract
The functionality of anhydrous milk fat (AMF) is determined from solid fat content (SFC) and triacylglycerol (TG) profiles, parameters traditionally measured using nuclear magnetic resonance and high pressure liquid chromatography respectively. Raman spectroscopy coupled with partial least squares (PLS) analysis has been assessed as an alternative method for SFC and TG class quantification. Sample temperature at which the Raman spectra were collected, method of spectral preprocessing and type of PLS analysis were all investigated and found to significantly affect the resulting calibrations (as parameterized by root mean square error of cross validation). Physically heterogeneous AMF samples held at 20 °C were shown to allow reliable SFC predictions on the basis of collected Raman spectra. In contrast to SFC calibrations, physically homogenous samples in a liquid form were ideal for TG class concentration predictions, however, not all TG classes could be reliably predicted.Keywords
This publication has 23 references indexed in Scilit:
- At-Line Near-Infrared Spectroscopy for Prediction of the Solid Fat Content of Milk Fat from New Zealand ButterJournal of Agricultural and Food Chemistry, 2007
- Calibration of near infrared spectroscopy for solid fat content of fat blends analysis using nuclear magnetic resonance dataAnalytica Chimica Acta, 2005
- Probing the Excited States of Ru(II) Complexes with Dipyrido[2,3-a:3‘,2‘-c]phenazine: A Transient Resonance Raman Spectroscopy and Computational StudyThe Journal of Physical Chemistry A, 2005
- Using design of experiments to select optimum calibration model parametersThe Analyst, 2003
- Evaluation of Raman Spectroscopy for Determining cis and trans Isomers in Partially Hydrogenated Soybean OilOrganic Process Research & Development, 2002
- Determination of the total unsaturation in vegetable oils by Fourier transform Raman spectroscopy and multivariate calibrationVibrational Spectroscopy, 2001
- Quantitative analysis of oils and fats by Fourier transform Raman spectroscopySpectrochimica Acta Part A: Molecular Spectroscopy, 1991
- Premelting phenomena in fatty acids: an infrared and Raman studyThe Journal of Physical Chemistry, 1987
- Laser-Raman investigation of phospholipid-polypeptide interactions in model membranesBiochemistry, 1979
- Excitation profiles of laser Raman spectra in the resonance region of two carotenoid pigments in solutionJournal of the American Chemical Society, 1970